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Steering Control Apparatus for a Vehicle

Inactive Publication Date: 2007-12-20
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Accordingly, it is an object of the present invention to provide a steering control apparatus for controlling deflection of a vehicle to ensure a stability thereof, when the vehicle is turning, with an anti-skid control or traction control being performed on a μ-split road surface, to cause a difference in longitudinal force between right and left wheels.

Problems solved by technology

However, according to such an assist system that the steering maneuver of the vehicle driver prevails, and that is aimed to assist the maneuver of the vehicle driver with the steering torque, it is difficult to be determined whether the steering angle of the steering wheel is resulted from the intention of the vehicle driver, i.e., the maneuver of the vehicle driver, or the one resulted from the control.
Therefore, it may be caused that the desired yaw rate based on the vehicle speed and steering angle can not be determined.

Method used

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  • Steering Control Apparatus for a Vehicle
  • Steering Control Apparatus for a Vehicle
  • Steering Control Apparatus for a Vehicle

Examples

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Embodiment Construction

[0024]Referring to FIG. 1, there is schematically illustrated a steering control apparatus, which may be called as an electric power steering control apparatus, according to an embodiment of the present invention. A steering wheel SW maneuvered by a vehicle driver is mechanically connected with steered wheels, generally front wheels, WHfr and WHfl as shown in FIG. L. When the steering wheel SW is maneuvered, its rotational motion is transferred to a pinion gear PN through a steering shaft SH. Then, by means of a rack RK meshed with the pinion gear PN, the rotational motion of the latter is converted into a reciprocating motion of the former. In accordance with the motion of the rack RK, a knuckle arm KL is pushed through a tie rod TR, so that in accordance with the maneuver of the steering wheel SW, the steered wheels WHfr and WHfl are steered. The steering shaft SH is connected with an electric motor MT through a speed reducing mechanism (not shown). By means of the output of the e...

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Abstract

A steering device is provided for controlling steering torque applied to a steering wheel of a vehicle. A braking device is provided for controlling longitudinal force applied to each wheel, and a control device is provided for performing at least one of an anti-skid control and a traction control. It is observed whether the control device is performing the control on a split road surface. The steering torque is controlled on the basis of a difference of longitudinal force applied to the right and left wheels, and a turning state amount deviation between a turning state amount and a desired amount thereof. The desired amount of turning state is calculated, on the basis of the turning state of the vehicle obtained when one of the anti-skid control and the traction control is performed on the split road surface.

Description

[0001]This application claims priority under 35 U.S.C. Sec.119 to No. 2006-165668 filed in Japan on Jun. 15, 2006, the entire content of which is herein incorporated by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a steering control apparatus for a vehicle, and particularly relates to a steering control apparatus capable of restraining deflection of the vehicle, when the vehicle is turning, with an anti-skid control or traction control being performed on a μ-split road surface.[0003]In Japanese Patent Laid-open Publication No. 2004-532153, which corresponds to US Publication No. 20050189163A1, with respect to a stability compensation system for stabilizing a vehicle, it is proposed to provide the system which is capable of stabilizing the vehicle by adjusting a steering wheel, when a split μ (may be called as a μ-split) braking operation is performed to cause unbalanced braking torque, thereby to deteriorate the vehicle stability. It is described in th...

Claims

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Application Information

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IPC IPC(8): B62D6/00
CPCB60T8/1769B60T2260/024B60W10/184B62D6/003B60W30/045B60W40/064B60W10/20
Inventor YASUI, YOSHIYUKIKODAMA, HIROYUKIASANO, KENJIKATO, TOSHIHISA
Owner ADVICS CO LTD